cpufreq interactive governor: event tracing
Change-Id: Ic13614a3da2faa2d4bd215ca3eb7191614f0cf66
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c
index 8fc147c..62e7456 100644
--- a/drivers/cpufreq/cpufreq_interactive.c
+++ b/drivers/cpufreq/cpufreq_interactive.c
@@ -30,6 +30,9 @@
#include <linux/kthread.h>
#include <linux/mutex.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/cpufreq_interactive.h>
+
#include <asm/cputime.h>
static atomic_t active_count = ATOMIC_INIT(0);
@@ -182,7 +185,11 @@
new_freq = pcpu->freq_table[index].frequency;
if (pcpu->target_freq == new_freq)
+ {
+ trace_cpufreq_interactive_already(data, cpu_load,
+ pcpu->target_freq, new_freq);
goto rearm_if_notmax;
+ }
/*
* Do not scale down unless we have been at this frequency for the
@@ -190,10 +197,16 @@
*/
if (new_freq < pcpu->target_freq) {
if (pcpu->timer_run_time - pcpu->freq_change_time
- < min_sample_time)
+ < min_sample_time) {
+ trace_cpufreq_interactive_notyet(data, cpu_load,
+ pcpu->target_freq, new_freq);
goto rearm;
+ }
}
+ trace_cpufreq_interactive_target(data, cpu_load, pcpu->target_freq,
+ new_freq);
+
if (new_freq < pcpu->target_freq) {
pcpu->target_freq = new_freq;
spin_lock_irqsave(&down_cpumask_lock, flags);
@@ -381,6 +394,8 @@
pcpu->freq_change_time_in_idle =
get_cpu_idle_time_us(cpu,
&pcpu->freq_change_time);
+ trace_cpufreq_interactive_up(cpu, pcpu->target_freq,
+ pcpu->policy->cur);
}
}
@@ -427,6 +442,8 @@
pcpu->freq_change_time_in_idle =
get_cpu_idle_time_us(cpu,
&pcpu->freq_change_time);
+ trace_cpufreq_interactive_down(cpu, pcpu->target_freq,
+ pcpu->policy->cur);
}
}